Ibisobanuro: Ibuye ry'ibirunga rizwi cyane nka pumice, ibuye rya basalt, cyangwa ibuye rya lava, ni ubwoko bw'ibikoresho bikora kandi birengera ibidukikije. Ririmo imyunyu ngugu myinshi n'ibintu bito, nka sodium, manyeziyumu, aluminiyumu, silikoni, kalisiyumu, titaniyumu, manganese, icyuma, nikeli, kobalti na molibdenum n'ibindi. Bikoreshwa cyane mu busitani, hasi, ku nkuta, mu bimera, no mu nganda za acqurium.

Ingano y'amabuye y'ibirunga: 3-6mm, 6-8mm, 8-10mm, 1-3cm, 3-6cm, 6-8cm, 8-10cm, 10-50cm bishobora guhindurwa.
Ikirungaibuyeibara: umutuku, umukara.
IkirungaibuyeIshusho: ikibumbe, agace gato, ifu, urupapuro